Clinical Trials

Multiple clinical trials evaluate seralutinib (GB002), an inhaled kinase inhibitor targeting pulmonary vascular remodeling, across Phase 1 through Phase 3 studies. These trials focus on pulmonary arterial hypertension, pulmonary hypertension associated with interstitial lung disease, and safety profiling in healthy subjects, with statuses encompassing completed studies, active or recruiting Phase 3 trials, and suspended protocols. Industry sponsors supporting this research include Gossamer Bio Inc., Pulmokine Inc., Worldwide Clinical Trials, and Zhejiang Echon Biopharm Limited.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT07181382 SUSPENDED
Pulmonary Hypertension Associated With Interstitial Lung Disease
GB002, Inc.
2026-02 PHASE3
NCT04816604 ACTIVE_NOT_RECRUITING
Pulmonary Arterial Hypertension
Gossamer Bio USA, Inc.
2021-04-05 PHASE2
NCT06274801 RECRUITING
Pulmonary Arterial Hypertension
Gossamer Bio USA, Inc.
2024-09-03 PHASE3
NCT06423261 ACTIVE_NOT_RECRUITING
Healthy
Zhejiang Echon Biopharm Limited
2023-08-24 PHASE1
NCT05934526 COMPLETED
Pulmonary Arterial Hypertension
GB002, Inc.
2023-12-28 PHASE3
NCT04456998 COMPLETED
Pulmonary Artery Hypertension
GB002, Inc., a wholly owned subsidiary of Gossamer Bio, Inc.
2020-11-12 PHASE2
NCT03926793 COMPLETED
Pulmonary Arterial Hypertension
GB002, Inc., a wholly owned subsidiary of Gossamer Bio, Inc.
2020-02-04 PHASE1
NCT03926793 Completed
Pulmonary Arterial Hypertension
GB002 Inc. a wholly owned subsidiary of Gossamer Bio Inc.|Gossamer Bio Inc.
2020-02-04 Phase 1
NCT03473236 COMPLETED
Safety Issues
GB002, Inc., a wholly owned subsidiary of Gossamer Bio, Inc.
2017-09-06 PHASE1
NCT03473236 Completed
Safety Issues
GB002 Inc. a wholly owned subsidiary of Gossamer Bio Inc.|Pulmokine Inc.|Worldwide Clinical Trials|Gossamer Bio Inc.
2017-09-06 Phase 1

(data from https://clinicaltrials.gov, updated on 2026-03-19)

Check the Seralutinib (GB002) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Seralutinib selectively binds to and inhibits platelet-derived growth factor receptors alpha and beta (PDGFRα and PDGFRβ), suppressing downstream receptor autophosphorylation and intracellular signal transduction. By halting aberrant pulmonary artery smooth muscle cell proliferation and vascular remodeling, this inhibition aims to reduce pulmonary vascular resistance in patients with pulmonary arterial hypertension.

Appendix RUO and cGMP Quality Standards

Quality Dimension RUO (Research Use Only) cGMP (Current Good Manufacturing Practice)
Clinical Applicability Prohibited in human clinical trials or medical diagnostics. Mandatory for human clinical trials (Phase I–III) and therapies.
Regulatory Status Non-regulated grade; exempt from drug manufacturing laws. Legally enforced by health authorities (e.g., FDA, EMA, NMPA).
Facility Environment Unclassified analytical or research laboratories. Validated Cleanrooms (ISO Class 5–8) with continuous monitoring.
Quality Control Basic purity and activity testing. Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma).
Process Validation Basic equipment calibration; no process validation required. Full qualification (IQ/OQ/PQ) and complete batch records.
Quality Assurance Vendor self-declared without required formal QMS. Mandatory QA/QC unit, Change Control, CAPA, and vendor audits.
Regulatory Impact High risk of IND rejection if used as a critical raw material. Required for IND/NDA filings, supported by Drug Master Files (DMF).

Footnotes

Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).

Note: Technical data last updated: Sep 1, 2026.